LME71.401A2PKG Siemens Flame Safeguard

Overview

The Siemens LME71.401A2PKG is a comprehensive flame safeguard assembly designed for the startup and supervision of 1- or 2-stage gas forced draft burners in intermittent operation. This microprocessor-based unit acts as a burner control system, ensuring the safe energization of safety shutoff valves while continuously monitoring for flame presence. This specific package is a preassembled kit that includes the LME71.000A2 basic unit, the PME71.401A2 program module, and a matching connector plug set, providing a ready-to-install solution for medium to high-capacity industrial burner applications.

Features

• Comprehensive assembly including the base burner control, specific program module, and plug kit
• Digital signal handling for high-precision control sequences and repeatable timing
• Integrated 3-color LED signal lamp for clear indication of operating status and error messages
• Built-in 3 x 7-segment display for local service, status, and error information
• Safety interlocks wired independently to provide specific fault indication for rapid troubleshooting
• Multi-color lockout reset button with integrated diagnostic functions
• Air pressure supervision with a function check of the air pressure switch during startup and operation
• Undervoltage detection and electrical remote lockout reset facility
• BC interface allowing connection to an AZL2 display or PC for enhanced parameterization

Specifications

• Model: LME71.401A2PKG
• Components: LME71.000A2 (Base), PME71.401A2 (Module), Plug Kit
• Mains Voltage: AC 230 V (50/60 Hz)
• Operation: Intermittent (controlled shutdown after 24 hours of continuous operation)
• Power Consumption: Approximately 12 VA
• Protection Rating: IP40 (when installed correctly)
• Weight: Approximately 5.0 lbs (2.27 kg)
• Dimensions: 12 x 8 x 8 inches
• Operating Temperature: -20 C to +60 C

Applications

• Supervision of 1- or 2-stage gas forced draft burners of medium to high capacity
• Industrial and commercial combustion plants requiring precise flame safety control
• Use with ionization probes or UV flame detectors (such as Siemens QRA series) for flame monitoring
• Integration into burner gas trains for safety shut-off control
• Systems requiring digital diagnostics and clear fault indication for HVAC and boiler management